The secret of success is focus of purpose.

Nineteen hundred and three will bring great advances in surgery, in the study of bacteria, in the knowledge of the cause and prevention of disease. Medicine is played out. Every new discovery of bacteria shows us all the more convincingly that we have been wrong and that the million tons of stuff we have taken was all useless.

His genius he was quite content in one brief sentence to define; Of inspiration one percent, of perspiration, ninety nine.

Books will soon be obsolete in the schools... Our school system will be completely changed in the next ten years.

I consider Paine our greatest political thinker. As we have not advanced, and perhaps never shall advance, beyond the Declaration and Constitution, so Paine has had no successors who extended his principles.

I have not failed. I've just found 10,000 foundations and individual donors whose priorities don't align with my organization's.

My mother was the making of me. She was so true and so sure of me, I felt that I had someone to live for - someone I must not disappoint. The memory of my mother will always be a blessing to me.